Electric heating – Metal heating – By arc
Patent
1986-12-10
1989-01-10
Albritton, C. L.
Electric heating
Metal heating
By arc
29846, 21912135, B23K 2600
Patent
active
047975300
ABSTRACT:
A ceramic circuit substrate can be manufactured by a method comprising the steps of (i) providing an electrically insulating ceramic substrate; and (ii) irradiating a predetermined region of said ceramic substrate with an energy beam such that at least a portion of said region is rendered conductive.
REFERENCES:
patent: 3056881 (1962-10-01), Schwarz
patent: 4395436 (1983-07-01), Bianchi et al.
European Search Report.
Albritton C. L.
Kabushiki Kaisha Toshiba
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